33G ME. G. MUEEAT AND MISS F. G. WHITTING ON 



GiTHAEISTES, Steiu. 



Botli the known species of" Citharistes occurred : C. regiuSi Stein, once only, viz. in 

 lat. 31° N., long. 35° 30' "W. ; C. Apsteinii, Schiitt, though never plentiful, occurred from 

 lat. 34° to 39° N. in the Atlantic to Colon in Panama. We have figured C, Ajjsteinii 

 on PI. XXXI. figs. 3 a, b. Schiitt states that in this species there is a single large 

 dorsal spine bounding the cavity formed by the curve of the body. In fig. 3 b we have 

 given a ventral view of C. Apsteinii, showing that there are two spines, marked with 

 large pits and expanding above, where they meet the body. 



